Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:04:08 2013 Optimize a model with 145320 rows, 144120 columns and 576120 nonzeros Presolve removed 3023 rows and 0 columns Presolve time: 1.27s Presolved: 142297 rows, 144120 columns, 570074 nonzeros Variable types: 144000 continuous, 120 integer (120 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 19332 1.2360265e+05 3.752546e+04 0.000000e+00 5s 29444 1.7162219e+05 1.881584e+04 0.000000e+00 10s 38055 1.9304613e+05 3.341604e+03 0.000000e+00 15s 40764 1.9402606e+05 0.000000e+00 0.000000e+00 17s Root relaxation: objective 1.940261e+05, 40764 iterations, 17.34 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 194026.056 0 4 - 194026.056 - - 19s H 0 0 197229.00000 194026.056 1.62% - 19s H 0 0 195142.00000 194026.056 0.57% - 21s 0 0 194027.123 0 6 195142.000 194027.123 0.57% - 22s 0 0 194027.123 0 4 195142.000 194027.123 0.57% - 32s 0 0 194027.442 0 6 195142.000 194027.442 0.57% - 33s 0 0 194027.463 0 6 195142.000 194027.463 0.57% - 33s 0 2 194036.136 0 6 195142.000 194036.136 0.57% - 39s 4 6 194194.715 4 4 195142.000 194142.214 0.51% 176 40s * 26 15 22 195085.00000 194142.214 0.48% 170 44s 27 16 194161.341 1 2 195085.000 194161.341 0.47% 178 45s H 49 12 194463.63504 194223.866 0.12% 187 48s H 51 13 194449.03209 194224.186 0.12% 182 48s * 53 3 7 194295.00000 194224.186 0.04% 177 48s Cutting planes: Gomory: 2 Flow cover: 5 Explored 60 nodes (66412 simplex iterations) in 49.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.942950000000e+05, best bound 1.942905281770e+05, gap 0.0023%